Dynamic compaction construction method for ultrahigh fill roadbed of mountain road

The invention discloses a dynamic compaction construction method for an ultrahigh fill roadbed of a mountainous road. The dynamic compaction construction method comprises the steps of construction preparation, roadbed filling, quality inspection, dynamic compaction and trial compaction and filling and dynamic compaction. A dynamic compaction mode is adjusted and optimized through trial compaction, traditional multi-time compaction is replaced by one-time full compaction, the number of times of dynamic compaction is reduced, the construction period is shortened, the construction cost is reduced while it is ensured that the roadbed quality meets the standard and design requirements, the compaction effect of a soil body can be better controlled by properly reducing the number of times of dynamic compaction, and the construction efficiency is improved. The problem that the bearing capacity and the stability of a roadbed are influenced by excessive compaction or non-uniform compaction of a soil body caused by exce